Hunchback is no longer playing at MGM and there is no longer any shows playing at that theater. Beauty and the Beast is still playing at MGM though daily and the Lion King and Tarzan shows are still at AK.
As for new shows, the Goofy show at the Diamond Horseshoe was just added this Summer, but is primarily geared towards children. Another great recent addition to the parks is the Cinderella's Surprise Celebration show at MK. It takes place at the Castle stage every day and is, IMO, the best show I have ever seen in all my years of going to MK. Live singing, dancing, special effects, and lots of characters. It's really a lot of fun.
And yes, I do remember the Spirit of Pocahontas show at MGM and thought it was very good. I always thought it was a shame that it lasted only a short time. It was great, but Beauty and the Beast is still my favorite.